I have a 1988 mercury v135. I purchased the motor used at the end of last season. I ran it once and it ran great. I disconnected the fuel line and ran the motor dry before putting it up for the winter. I put fuel stabilizer in before layup. <br /><br />I just got it out for the first time and had a problem with it fouling the plugs... right off the bat. It has ngk surface gap plugs in it. I removed the plugs and cleaned them with gumout spray and the motor fired right up and ran strong for a couple of minutes. I trailered it since it was after dark and brought it back out the next day. <br /><br />Yesterday, I fired the boat up and ran it at about 4200 rpms for about 10 minutes to the far end of the lake. I was on my way back when the motor started to sputter and run rough. It would clear up and then run rough again. <br /><br />When I got it home, each of the plugs was oily looking and wet. I'm thinking new fuel/plugs. Any ideas or recommendations???? What would be a good plug for this motor. It is in a 16ft ski boat that will see both idling and frequent extended blasts.
